Rockwell Automation 140U Q and M-Frame Circuit Breakers Instruction Leaflet for Shunt Trip - Manual (Page 2)

Page 2
WARNING
IF ENERGY IS APPLIED TO SHUNT TRIP LEADS, DO
NOT ATTEMPT TO RESET AND CLOSE THE CIRCUIT
BREAKER. ATTEMPTING TO CLOSE THE CIRCUIT
BREAKER WHILE ENERGIZED WILL RESULT IN A
"SHOCKOUT" CONDITION.
Table lists application and electrical operating rating
data for the shunt trip.
For this publication, the term circuit breaker shall also
include molded case switch and motor circuit protector.
Depending on the model ordered, connections for the
shunt trip are in one of four forms. The standard wiring
configuration is pigtail leads exiting the rear of the base
directly behind the shunt trip. Optional configurations
include a terminal block mounted on the same side of the
base as the accessory, leads exiting the side of the base
where the accessory is mounted, and leads exiting the
rear of the base on the side opposite the accessory. The
18-inch long pigtail leads are color coded for identifica-
tion; identification labels are provided for pigtail leads and
terminal block points. For allowable locations of all acces-
sories, refer to Selection Guide.
Note: When the walking beam interlock is used with
the circuit breaker, the rear trough cannot be used for
accessory pigtail leads.
This instruction leaflet gives detailed procedures for
installing the shunt trip.
2. INSTALLATION
Note: The shunt trip can be field-installed in Q and
M Frame circuit breakers.
Before attempting to install the shunt trip, check that
catalog number is correct as ordered and that the
rating of the accessory satisfies job requirements.
The shunt trip, shown in kit form in Fig. 2-1, is installed in
right or left accessory mounting cavity of a 2-, 3-, or
4-pole circuit breaker with a fixed thermal or
adjustable thermal trip unit; and, in the left pole only of a
circuit breaker with an electronic trip unit. A shunt
must be installed in the circuit breaker before the cir-
cuit breaker is mounted in an electrical system. To install
the shunt trip, perform the following procedures:
Note: A circuit breaker that is mounted in an electri-
system must be removed to install the accessory.
To ensure correct accessory installation, the circuit
breaker must be placed on a horizontal surface.
WARNING
VOLTAGES IN ENERGIZED EQUIPMENT CAN
CAUSE DEATH OR SEVERE PERSONAL INJURY.
BEFORE REMOVING A CIRCUIT BREAKER
INSTALLED IN AN ELECTRICAL SYSTEM, MAKE
THE CIRCUIT BREAKER IS SWITCHED TO THE
OFF POSITION AND THERE IS NO VOLTAGE
PRESENT WHERE WORK IS TO BE PERFORMED.
SPECIAL ATTENTION SHOULD BE PAID TO
REVERSE FEED APPLICATIONS TO ENSURE NO
VOLTAGE IS PRESENT.
Note: For new circuit breaker installation, the trip unit
must be installed in circuit breaker before attempting
to install
a shunt trip.
Switch circuit breaker to OFF position.
Disconnect and remove circuit breaker from instal-
lation and terminal connections.
Remove cover screws and covers
Note: For a shunt trip having rear or opposite-side
exiting pigtail leads, thread leads through center
trough
in side of base before attempting to insert the
mounting bracket. Pigtail leads exiting in this manner
be eased through trough as mounting bracket
is inserted into trip unit retaining slots. Use center
trough also for leads exiting the side of the circuit
b ke r.
Route wiring to meet installation requirements.
(See Fig.
40752-075(1) Effective 4/02
Where local codes and standards permit and UL list-
ing is not required, internal accessories can be field
installed in sealed circuit breakers. In this case, UL
listing becomes invalid and the label should be
removed.